A leak-proof hydrogenation device and its operating method

Abstract

A leak-proof hydrogen refueling device and its operating method are disclosed, belonging to the field of hydrogen refueling technology. The device aims to solve the problem of poor sealing and easy leakage at the connection between existing hydrogen refueling devices and hydrogen refueling pipelines. The device includes a connecting sleeve, a slider, a bidirectional lead screw, a drive assembly, and a baffle. The connecting sleeve is threadedly connected to the hydrogen refueling pipeline, the slider is slidably connected to the connecting sleeve and driven by the bidirectional lead screw, and the baffle is slidably connected to the slider. A sealing gasket that mates with the baffle is provided inside the connecting sleeve. The drive assembly operates the bidirectional lead screw, causing the slider to push the baffle tightly against the sealing gasket, achieving a secondary seal. In addition, the device is equipped with a hydrogen sensor and an alarm light for timely alarm in case of hydrogen leakage. This invention effectively improves the sealing performance of the hydrogen refueling device, preventing hydrogen leakage even in the event of threaded connection seal failure, and has a leakage alarm function, thus improving the safety of the hydrogen refueling process.

Description

Technical Field

[0001] This invention relates to the field of hydrogen refueling technology, and in particular to a leak-proof hydrogen refueling device and its operating method. Background Technology

[0002] Hydrogen, as a clean and efficient new energy source, is gradually being widely used in fields such as hydrogen fuel cell vehicles. At hydrogen refueling stations, the refueling device is the key equipment for hydrogen refueling. However, existing hydrogen refueling devices have many shortcomings in terms of sealing and safety.

[0003] Currently, hydrogen fuel cell vehicles mostly use high-pressure hydrogen storage tanks, such as 35MPa or 70MPa tanks. These tanks are connected to the hydrogen inlet of the fuel cell unit via pipelines. Hydrogen refueling stations are also typically equipped with refueling equipment at the corresponding pressure levels. During refueling, hydrogen leakage often occurs due to the poor sealing performance of existing refueling devices. This leakage not only leads to energy waste, but more importantly, hydrogen is a flammable and explosive gas. Once leaked into the air, it can cause fires or even explosions, posing a serious threat to the safety of people and property.

[0004] Furthermore, existing hydrogen refueling devices have significant deficiencies in terms of static electricity prevention and open flame protection. Before refueling, hydrogen fuel cell vehicles, especially non-metallic components such as tires, often carry a large amount of static electricity. If the static electricity generated during refueling is not discharged in time, it may ignite sparks, which could then ignite leaked hydrogen and cause an accident. At the same time, open flames are also a major safety hazard during hydrogen refueling and must be strictly prevented.

[0005] To address the aforementioned issues, although some improved hydrogen refueling devices have emerged on the market, such as CN112576930A which discloses a safe hydrogen refueling device and its usage method based on a fully immersed mobile vehicle-mounted hydrogen storage device, which continuously immerses the hydrogen delivery pipe underwater or in water and is equipped with safety protection devices and functions such as a hydrogen refueling gun locking device and a leak collection and storage room, thereby completely isolating air and harmful static electricity and open flames, achieving complete water isolation protection during the hydrogen refueling process; however, this invention uses a single-layer threaded connection for communication and sealing. To avoid poor sealing, it employs continuous immersion of the hydrogen delivery pipe underwater or in water, which is costly and inconvenient to operate.

[0006] There are also related technical ideas to improve sealing performance by using multi-layer sealing structures or adding anti-static and open flame protection devices, but these solutions are often complex in structure, expensive, and have limited effectiveness in practical applications.

[0007] In particular, the main danger of on-board hydrogen storage systems is high-pressure explosions caused by leaks. Existing hydrogen refueling devices are insufficiently protected against such high-pressure leaks and lack effective real-time monitoring and emergency response mechanisms. Therefore, it is of paramount importance to develop a hydrogen refueling device that is safer in terms of explosion prevention, leak detection, and static electricity isolation, while also being simple in structure and cost-effective.

[0008] In summary, existing hydrogen refueling devices have significant shortcomings in terms of sealing, anti-static properties, open flame protection, and handling of high-pressure leaks, necessitating a new type of hydrogen refueling device to address these issues. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a leak-proof hydrogenation device and its working method, thereby solving the technical problems of poor sealing performance and easy leakage of hydrogenation devices in the field of hydrogenation technology, as well as the technical limitations of the prior art, which is that the hydrogenation device and the hydrogenation pipeline are only connected by a single layer of thread, resulting in poor sealing effect and safety hazards.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a leak-proof hydrogenation device, comprising a hydrogenation assembly and a connecting assembly connected to the hydrogenation assembly, the connecting assembly comprising a connecting sleeve connected to the hydrogenation assembly, a slider slidably connected to the connecting sleeve, a bidirectional lead screw threadedly connected to the slider, a driving assembly drivenly connected to the bidirectional lead screw, and a baffle slidably connected to the slider. One end of the connecting sleeve is threadedly connected to a hydrogenation pipe, the hydrogenation pipe passes through the baffle and is rotatably connected to the baffle. The slider is located on both sides of the bidirectional lead screw, and a sealing gasket that cooperates with the baffle is provided inside the connecting sleeve.

[0011] In a preferred embodiment, the drive assembly includes a worm gear connected to a bidirectional lead screw and a worm meshing with the worm gear. The worm passes through a connecting sleeve and is rotatably connected to the connecting sleeve. A handwheel is provided at one end of the worm.

[0012] In a preferred embodiment, the hydrogenation pipeline passes through the sealing gasket.

[0013] In a preferred embodiment, the sealing gasket is fitted onto the hydrogenation pipeline and embedded in the inner hole of the connecting sleeve, with one side flush against the plane of one side of the baffle and the other side flush against the stepped surface of the connecting sleeve.

[0014] In a preferred embodiment, one end of the connecting sleeve is provided with a slot that mates with the baffle, the inner ring of the baffle is provided with an annular groove, a sealing ring is installed in the annular groove, the sealing ring is fitted onto the outer ring of the hydrogenation pipe, and the baffle is rotatably connected to the hydrogenation pipe.

[0015] In a preferred embodiment, one side of the slider is provided with a ramp that cooperates with the baffle, and the two are slidably connected by the ramp.

[0016] In a preferred embodiment, a hydrogen sensor is provided at one end of the slider, and an alarm light is provided at the top of the connecting sleeve.

[0017] In a preferred embodiment, the hydrogen refueling assembly is internally equipped with a controller that is electrically connected to a hydrogen sensor and an alarm light.

[0018] A method for operating a leak-proof hydrogenation apparatus, comprising employing any one of the leak-proof hydrogenation apparatuses described above, the method including:

[0019] Step 1: Align the baffle with the slot on the connecting sleeve;

[0020] Step 2: Insert the hydrogenation pipe into the connecting sleeve and rotate the hydrogenation pipe to make it threadedly connected to the connecting sleeve;

[0021] Step 3: Drive the bidirectional lead screw to rotate through the drive component, causing the sliders to move closer to each other;

[0022] Step 4: The slider presses against the baffle via the ramp, causing the baffle to come into close contact with the sealing gasket, thereby achieving a seal.

[0023] In a preferred embodiment, if the hydrogen sensor detects a hydrogen leak during the sealing process in step 4, the controller will control the alarm light to flash.

[0024] In a preferred embodiment, the driving method of the driving component in step 3 is to manually drive the worm gear to rotate.

[0025] The present invention provides a leak-proof hydrogenation device and its operating method, which have the following beneficial effects:

[0026] 1. This invention solves the technical problem of poor sealing and easy leakage of hydrogenation devices in the field of hydrogenation technology, and overcomes the technical limitations of the prior art, which is that the hydrogenation device and the hydrogenation pipeline are only connected by a single layer of thread, resulting in poor sealing effect and safety hazards.

[0027] 2. Based on the single-layer threaded connection, the present invention adds the cooperation of slider, baffle and sealing gasket to form a multi-level sealing structure. This design further improves the overall sealing effect. Even if the threaded connection fails to seal, hydrogen leakage can be avoided by the cooperation of slider, baffle and sealing gasket.

[0028] 3. This invention achieves stable driving of the slider through the combination of worm gear, worm and double-acting screw. At the same time, the unidirectional nature of the worm and worm gear transmission prevents the double-acting screw from rotating on its own, thus ensuring the stability of the sealing effect.

[0029] 4. This invention adds a hydrogen sensor and an alarm light, which can promptly alert when a hydrogen leak is detected. This design enhances the safety of the device and enables operators to promptly detect and handle hydrogen leaks.

[0030] 5. By increasing the number of sealing layers and improving the connection method, this invention significantly improves the sealing effect of the device and reduces the risk of hydrogen leakage. At the same time, by adding a safety monitoring function, it further improves the safety performance of the device.

[0031] 6. The multi-level sealing structure of the present invention significantly improves the sealing performance of the device. This design not only improves the sealing performance of the device, but also enhances its reliability and durability.

[0032] 7. The present invention uses a handwheel to drive the worm gear to rotate, which can easily realize the movement of the slider and the pushing of the baffle. This design allows operators to easily perform sealing and adjustment work on the device, thus improving work efficiency.

[0033] 8. Through a series of innovative designs and technical improvements, this invention has successfully solved the technical problems of poor sealing and easy leakage in hydrogenation devices, significantly improving the sealing effect and safety performance of the devices. At the same time, its simple and quick operation also makes this invention widely applicable and promising in practical applications. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] Figure 1 This is a front view of the overall structure of the present invention;

[0036] Figure 2 This is a reverse view of the overall structure of the present invention;

[0037] Figure 3 This is a partial longitudinal sectional view of the top view of the present invention;

[0038] Figure 4 This is a partial transverse sectional view of the top view of the present invention;

[0039] Figure 5 This is a front view of the reverse side of the invention;

[0040] Figure 6 This is a schematic diagram A showing the assembly of the connecting sleeve, hydrogenation pipe, slider, baffle, and sealing gasket of the present invention;

[0041] Figure 7 This is a schematic diagram (B) showing the assembly of the slider, worm gear, worm, and bidirectional lead screw of the present invention.

[0042] Figure 8This is an enlarged schematic diagram (C) of the connecting component of the present invention.

[0043] In the diagram: 1. Hydrogen filling assembly; 2. Connecting sleeve; 3. Hydrogen filling pipe; 4. Slider; 5. Inclined ramp; 6. Baffle; 7. Sealing gasket; 8. Worm gear; 9. Worm; 10. Bidirectional lead screw; 11. Alarm light; 12. Hydrogen sensor. Detailed Implementation

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments:

[0045] Example 1

[0046] like Figures 1 to 8 As shown, a leak-proof hydrogenation device includes a hydrogenation assembly 1 and a connecting assembly connected to the hydrogenation assembly 1. The connecting assembly includes a connecting sleeve 2 connected to the hydrogenation assembly 1, a slider 4 slidably connected to the connecting sleeve 2, a bidirectional lead screw 10 threadedly connected to the slider 4, a driving assembly drivenly connected to the bidirectional lead screw 10, and a baffle 6 slidably connected to the slider 4. One end of the connecting sleeve 2 is threadedly connected to a hydrogenation pipe 3, which passes through the baffle 6 and is rotatably connected to the baffle 6. The slider 4 is located on both sides of the bidirectional lead screw 10, and a sealing gasket 7 that cooperates with the baffle 6 is provided inside the connecting sleeve 2.

[0047] In this embodiment, the drive assembly includes a worm gear 8 connected to a bidirectional lead screw 10 and a worm 9 meshing with the worm gear 8. The worm 9 passes through the connecting sleeve 2 and is rotatably connected to the connecting sleeve 2. A handwheel is provided at one end of the worm 9.

[0048] Furthermore, the hydrogenation pipe 3 penetrates the sealing gasket 7.

[0049] Furthermore, the sealing gasket 7 is fitted onto the hydrogenation pipe 3 and embedded in the inner hole of the connecting sleeve 2, with one side flush against the plane of the baffle 6 and the other side flush against the stepped surface of the connecting sleeve 2.

[0050] Furthermore, one end of the connecting sleeve 2 is provided with a slot that cooperates with the baffle 6, the inner ring of the baffle 6 is provided with an annular groove, a sealing ring is installed in the annular groove, the sealing ring is fitted on the outer ring of the hydrogenation pipe 3, and the baffle 6 is rotatably connected to the hydrogenation pipe 3.

[0051] Furthermore, a ramp 5 is provided on one side of the slider 4 to cooperate with the baffle 6, and the two are slidably connected by the ramp 5.

[0052] Furthermore, a hydrogen sensor 12 is provided at one end of the slider 4, and an alarm light 11 is provided at the top of the connecting sleeve 2.

[0053] Furthermore, the hydrogen refueling assembly is equipped with a controller that is electrically connected to the hydrogen sensor 12 and the alarm light 11.

[0054] In practical use, align the baffle 6 with the slot and insert the hydrogenation pipe 3 into the connecting sleeve 2. Rotate the hydrogenation pipe 3 to make it threadedly connected to the connecting sleeve 2 for primary sealing. Rotate the worm gear 9 by handwheel. Figure 7 As shown, the worm 9 drives the worm wheel 8 to rotate, and the worm wheel 8 drives the bidirectional lead screw 10 to rotate, causing the two sliders 4 to move closer to each other, as shown. Figure 6 As shown, the slider 4 is pressed against the baffle 6 by the cooperating ramp 5, making it tightly abut against the sealing gasket 7. The sealing gasket 7 is deformed under pressure and seals the surrounding gaps, thereby further improving the overall sealing effect. Because of the unidirectional transmission of the worm gear 9 and worm wheel 8, the bidirectional screw 10 can be prevented from rotating on its own, thereby preventing the baffle 6 from pushing the slider 4 to move. If hydrogen leaks from the connection between the hydrogen filling pipe 3 and the connecting sleeve 2, the hydrogen will also be intercepted by the sealing gasket 7 to prevent it from leaking to the outside of the invention. The sealing effect is good. When the hydrogen sensor 12 detects hydrogen leakage, it will transmit the signal to the controller. The controller will transmit the signal to the alarm light 11, and the alarm light 11 will flash to remind the user.

[0055] Example 2

[0056] In another preferred embodiment, based on Embodiment 1, a method for operating a leak-proof hydrogenation device is to use the leak-proof hydrogenation device described in Embodiment 1 above, the method comprising:

[0057] Step 1: Align the baffle 6 with the slot on the connecting sleeve 2;

[0058] Step 2: Insert the hydrogenation pipe 3 into the connecting sleeve 2, and rotate the hydrogenation pipe 3 to make it threadedly connected to the connecting sleeve 2;

[0059] Step 3: Drive the bidirectional lead screw 10 to rotate through the drive assembly, so that the sliders 4 move closer to each other;

[0060] Step 4: The slider 4 presses the baffle 6 against the ramp 5, so that the baffle 6 and the sealing gasket 7 are tightly pressed together, thereby sealing.

[0061] In this embodiment, if the hydrogen sensor 12 detects a hydrogen leak during the sealing process in step 4, the controller controls the alarm light 11 to flash as an alarm.

[0062] Furthermore, in step 3, the driving method of the driving component is to manually drive the worm gear 9 to rotate.

[0063] Example 3

[0064] In another preferred embodiment, based on embodiments 1 and 2, this embodiment will describe the technical solution of the present invention in detail with reference to the accompanying drawings.

[0065] This embodiment provides a leak-proof hydrogenation device, the structure of which is as follows: Figures 1 to 8 As shown, it mainly includes a hydrogen refueling assembly 1, a connecting sleeve 2, a hydrogen refueling pipe 3, a slider 4, a ramp 5, a baffle 6, a sealing gasket 7, an alarm light 11, and a hydrogen sensor 12.

[0066] The hydrogen refueling assembly 1 is the main part of the hydrogen refueling device, used for storing and supplying hydrogen. A connecting sleeve 2 is located at the outlet end of the hydrogen refueling assembly 1 and is used to connect to the hydrogen refueling pipeline 3. One end of the hydrogen refueling pipeline 3 is inserted into the connecting sleeve 2, thus connecting with the hydrogen refueling assembly 1.

[0067] To ensure a tight seal, this embodiment incorporates a self-locking mechanism consisting of a slider 4 and a baffle 6 inside the connecting sleeve 2. The slider 4 is slidably mounted on the inner wall of the connecting sleeve 2, while the baffle 6 is mounted on the outer wall of the hydrogen refueling pipe 3 and matches the slider 4. When the hydrogen refueling pipe 3 is inserted into the connecting sleeve 2, the baffle 6 pushes the slider 4 to slide along the inner wall of the connecting sleeve 2 until the slider 4 passes the highest point of the ramp 5 on the baffle 6. Then, under its own weight or the elastic force of the spring, it engages in the groove behind the baffle 6, thus achieving initial fixation between the hydrogen refueling pipe 3 and the connecting sleeve 2.

[0068] Furthermore, to further enhance the sealing performance, a sealing gasket 7 is provided between the hydrogen refueling pipe 3 and the connecting sleeve 2 in this embodiment. The sealing gasket 7 can be made of elastic materials such as rubber or silicone, and has good sealing performance. After the hydrogen refueling pipe 3 is inserted into the connecting sleeve 2 and initially fixed, the sealing gasket 7 will be compressed and filled in the gap between the hydrogen refueling pipe 3 and the connecting sleeve 2, thereby preventing hydrogen leakage.

[0069] A baffle 6 is located at the outlet end of the connecting sleeve 2 and is movable relative to the connecting sleeve 2. The longitudinal section of the baffle 6 is rectangular, and its edge fits tightly against the inner wall of the connecting sleeve 2, thereby forming a closed chamber. After the hydrogen supply pipe 3 is connected to the connecting sleeve 2, the baffle 6 will seal the outlet of the chamber to prevent hydrogen from leaking out.

[0070] To monitor for hydrogen leakage, a hydrogen sensor 12 is installed inside the connecting sleeve 2 in this embodiment. The hydrogen sensor 12 can detect the hydrogen concentration in the chamber in real time. When the hydrogen concentration exceeds the standard, it will send a signal to trigger the alarm light 11 to flash, thereby reminding the operator to take timely action.

[0071] Working principle: During use, the operator inserts the hydrogen refueling pipe 3 into the connecting sleeve 2 and initially secures it using the self-locking mechanism. Then, the baffle 6 is pushed to seal the outlet of the chamber. Next, the hydrogen refueling assembly 1 is turned on to perform the hydrogen refueling operation. During the hydrogen refueling process, the hydrogen sensor 12 monitors the hydrogen concentration in the chamber in real time. If a leak occurs, the hydrogen sensor 12 will immediately send a signal to trigger the alarm light 11 to flash, allowing the operator to take timely action based on the alarm information.

[0072] Example 4

[0073] In another preferred embodiment, based on Embodiment 3, this embodiment is basically the same as Embodiment 3, except for the structure of the self-locking mechanism. In this embodiment, the self-locking mechanism includes a thread on the inner wall of the connecting sleeve 2 and a matching external thread on the outer wall of the hydrogenation pipe 3. When the hydrogenation pipe 3 is inserted into the connecting sleeve 2, by rotating the hydrogenation pipe 3, its external thread engages with the thread on the inner wall of the connecting sleeve 2, thereby achieving fixation and sealing between the hydrogenation pipe 3 and the connecting sleeve 2.

[0074] This self-locking mechanism is simple in structure, easy to operate, and has good sealing performance. Furthermore, due to the threaded connection, the insertion depth of the hydrogen refueling pipe 3 into the connecting sleeve 2 can be adjusted as needed, thus meeting the usage requirements in different scenarios.

[0075] Example 5

[0076] In another preferred embodiment, based on embodiments 3 and 4, this embodiment further adds intelligent control functions compared to embodiments 3 and 4. Specifically, a microprocessor is provided on the hydrogen refueling assembly 1 to receive signals from the hydrogen sensor 12 and perform judgments and processing according to preset logic. When the hydrogen sensor 12 detects a hydrogen leak, the microprocessor will immediately issue a command to close the outlet valve of the hydrogen refueling assembly 1, cutting off the hydrogen supply, and simultaneously trigger the alarm light 11 to flash.

[0077] In addition, this embodiment can also connect the microprocessor to a remote monitoring center to upload leakage alarm information to the remote monitoring center in real time, so that monitoring personnel can understand the situation in a timely manner and take corresponding measures.

[0078] This intelligent control function can further improve the safety and reliability of hydrogen refueling equipment and reduce safety accidents caused by hydrogen leakage.

[0079] In a preferred embodiment, the drive assembly includes a worm gear 8 connected to the bidirectional lead screw 10 and a worm 9 meshing with the worm gear 8. The worm 9 passes through the connecting sleeve 2 and is rotatably connected to the connecting sleeve 2. A handwheel is provided at one end of the worm 9. With the above configuration, rotating the handwheel can drive the worm 9 to rotate. When the worm 9 rotates, it drives the worm gear 8 to rotate. The worm gear 8 is connected to the bidirectional lead screw 10, thereby driving the bidirectional lead screw 10 to rotate synchronously, realizing the reciprocating movement of the slider on the lead screw, and achieving the adjustment effect.

[0080] In a preferred embodiment, the connecting sleeve 2 has a groove inside, and a set of sliders 4 are fitted into the groove inside the connecting sleeve 2. This arrangement allows the sliders 4 to slide stably within the connecting sleeve 2. At the same time, a spring is provided on the side of the sliders 4, and the other end of the spring is connected to the inner wall of the connecting sleeve 2 to provide a restoring force for the sliders 4.

[0081] In a preferred embodiment, the hydrogen refueling pipe 3 passes through the sealing gasket 7; this arrangement ensures a tight fit between the hydrogen refueling pipe 3 and the sealing gasket 7, effectively preventing hydrogen leakage and improving the safety and stability of the overall system; in addition, the surface of the hydrogen refueling pipe 3 can be specially treated to further enhance the sealing effect between it and the sealing gasket 7.

[0082] In the preferred embodiment, the sealing gasket 7 is fitted onto the hydrogen refueling pipeline 3 and embedded in the inner hole of the connecting sleeve 2. One side of the gasket is flush with the plane of one side of the baffle 6, and the other side is flush with the stepped surface on the connecting sleeve 2. This arrangement ensures that the sealing gasket 7 can fit tightly, effectively preventing hydrogen leakage and improving the safety of the hydrogen refueling pipeline system. At the same time, this design simplifies the installation steps, facilitates later maintenance and replacement, and improves the overall operating efficiency of the equipment.

[0083] In a preferred embodiment, one end of the connecting sleeve 2 is provided with a slot that mates with the baffle 6. The inner ring of the baffle 6 is provided with an annular groove, and a sealing ring is installed in the annular groove. The sealing ring is fitted onto the outer ring of the hydrogenation pipeline 3, and the baffle 6 is rotatably connected to the hydrogenation pipeline 3. The above configuration ensures a tight fit between the connecting sleeve 2 and the baffle 6, effectively preventing media leakage. At the same time, the sealing ring enhances the sealing effect, allowing the baffle 6 to maintain good sealing performance during rotation, thus ensuring the stable operation of the hydrogenation system.

[0084] In a preferred embodiment, a ramp 5 is provided on one side of the slider 4 to cooperate with the baffle 6, and the two are slidably connected by the ramp 5. With the above configuration, when the slider 4 moves, it can smoothly slide along the ramp 5 to the position where it fits against the baffle 6, so as to achieve a stable connection. At the same time, the design of the ramp 5 also facilitates the adjustment of the relative position between the slider 4 and the baffle 6, which improves the flexibility and convenience of assembly.

[0085] In a preferred embodiment, a hydrogen sensor 12 is provided at one end of the slider 4, and an alarm light 11 is provided at the top of the connecting sleeve 2. With the above configuration, when the hydrogen sensor 12 detects that the hydrogen concentration exceeds the standard, it will immediately trigger a signal to be transmitted to the alarm light 11, causing it to light up, thereby realizing an immediate warning of hydrogen leakage and ensuring the safety of the working environment.

[0086] In a preferred embodiment, the hydrogen refueling assembly is equipped with a controller that is electrically connected to the hydrogen sensor 12 and the alarm light 11. This configuration enables the hydrogen sensor 12 to quickly transmit a signal to the controller when the hydrogen concentration exceeds the standard, and the controller then activates the alarm light 11 to provide an immediate warning and ensure the safety of the operating environment.

[0087] In a preferred embodiment, if the hydrogen sensor 12 detects a hydrogen leak during the sealing process in step 4, the controller will control the alarm light 11 to flash an alarm. Simultaneously, the controller will immediately cut off the hydrogen supply system and activate the emergency ventilation device to quickly dilute and discharge the leaked hydrogen, ensuring a safe operating environment and effectively preventing potential dangerous accidents.

[0088] In the preferred embodiment, the driving method of the driving component in step 3 is to manually drive the worm gear 9 to rotate. With the above settings, by manually rotating the worm gear 9, its rotation speed and angle can be precisely controlled, thereby adjusting the position or state of the components that work with it, achieving fine operation. At the same time, the manual driving method is simple and reliable, reducing system complexity and failure rate.

[0089] In summary, this invention proposes an innovative leak-proof hydrogen refueling device and its operating method, successfully solving the key technical problems of poor sealing and easy leakage in hydrogen refueling devices. Compared with the existing technology where the hydrogen refueling device and hydrogen refueling pipeline rely solely on a single-layer threaded connection, resulting in poor sealing and significant safety hazards, this invention represents a significant improvement and innovation. By introducing a connecting assembly including a connecting sleeve 2, a slider 4, a bidirectional lead screw 10, a drive component, and a baffle 6, this invention adds an additional sealing layer to the single-layer threaded connection, significantly enhancing the sealing effect. In particular, the ingenious cooperation of the slider 4, the baffle 6, and the sealing gasket 7 ensures that even in the event of threaded connection seal failure, It can also effectively prevent hydrogen leakage, demonstrating its excellent dynamic adaptability and high sealing performance. In addition, the device integrates a hydrogen sensor 12 and an alarm light 11, which can quickly issue an alarm in the event of hydrogen leakage, further enhancing the safety of the device. This design not only improves the reliability of the seal, but also achieves dynamic adjustment and enhancement of the sealing effect through the ingenious cooperation of the mechanical structure. By monitoring and warning of potential leakage risks in real time, the present invention effectively avoids the occurrence of safety accidents. Therefore, the present invention has demonstrated significant technical advantages in the structural design, sealing mechanism and safety monitoring of hydrogenation devices, opening up new avenues for the development and application of hydrogenation technology and providing a safer and more reliable solution.

Claims

1. A leak-proof hydrogenation device, comprising a hydrogenation assembly (1) and a connecting assembly connected to the hydrogenation assembly (1), characterized in that: The connecting assembly includes a connecting sleeve (2) connected to the hydrogenation assembly (1), a slider (4) slidably connected to the connecting sleeve (2), a bidirectional lead screw (10) threadedly connected to the slider (4), a driving assembly driven by the bidirectional lead screw (10), and a baffle (6) slidably connected to the slider (4). One end of the connecting sleeve (2) is threadedly connected to a hydrogenation pipe (3), which passes through the baffle (6) and is rotatably connected to it. The slider (4) is located on both sides of the bidirectional lead screw (10). The connecting sleeve (2) is provided with a sealing gasket (7) that cooperates with the baffle (6). The driving assembly includes a worm gear (8) connected to the bidirectional lead screw (10) and a drive assembly connected to the worm gear (8). The worm (9) meshes with the connecting sleeve (2) and is rotatably connected to the connecting sleeve (2). A handwheel is provided at one end of the worm (9). The sealing gasket (7) is fitted on the hydrogenation pipe (3) and embedded in the inner hole of the connecting sleeve (2). One side is flush with the plane of the side of the baffle (6) and the other side is flush with the stepped surface on the connecting sleeve (2). A slot is provided at one end of the connecting sleeve (2) to cooperate with the baffle (6). An annular groove is provided in the inner ring of the baffle (6). A sealing ring is installed in the annular groove and fitted on the outer ring of the hydrogenation pipe (3). A ramp (5) is provided on one side of the slider (4) to cooperate with the baffle (6). The two are slidably connected by the ramp (5).

2. The leak-proof hydrogenation device according to claim 1, characterized in that: A hydrogen sensor (12) is provided at one end of the slider (4), and an alarm light (11) is provided on the top of the connecting sleeve (2).

3. The leak-proof hydrogenation device according to claim 2, characterized in that: The hydrogenation assembly is equipped with a controller that is electrically connected to the hydrogen sensor (12) and the alarm light (11).

4. A method for operating a leak-proof hydrogenation device, characterized in that, The method employs a leak-proof hydrogenation apparatus as described in claim 3, comprising the following steps: Step 1: Align the baffle (6) with the slot on the connecting sleeve (2); Step 2: Insert the hydrogenation pipe (3) into the connecting sleeve (2) and rotate the hydrogenation pipe (3) to make it threadedly connected to the connecting sleeve (2); Step 3: Drive the bidirectional lead screw (10) to rotate through the drive assembly, so that the sliders (4) move closer to each other; Step 4: The slider (4) presses the baffle (6) through the ramp (5), so that the baffle (6) and the sealing gasket (7) are tightly pressed together, thereby sealing.

5. The operating method of a leak-proof hydrogenation device according to claim 4, characterized in that: In step 3, the driving method of the driving component is to manually drive the worm gear (9) to rotate.

6. The operating method of a leak-proof hydrogenation device according to claim 4, characterized in that: If the hydrogen sensor (12) detects a hydrogen leak during the sealing process in step 4, the controller will control the alarm light (11) to flash to sound an alarm.

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